Digital filters

H - Electricity – 03 – H

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328/0.3

H03H 21/00 (2006.01) H04B 3/23 (2006.01)

Patent

CA 1260553

ABSTRACT OF THE DISCLOSURE A transversal finite impulse response, adaptive digital filter comprises three stages, one of which is a memory stage which stores input samples X and coefficients, another of which is an arithmetic stage which forms convolution products and accumulates the product to provide an output, and the third of which forms update values for updating the coefficients according to a predetermined algorithm. The stages are coupled by buses and data transfer between the stages via the buses is controlled by a control unit. The filter operates so that convolution products are formed during a first part of each sample period and update values are formed during a second part of each sample period for use in the subsequent sample period.

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